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Energy efficiency of small buildings with smart cooling system in the summer

Yazdan DANESHVAR, Majid SABZEHPARVAR, Seyed Amir Hossein HASHEMI

Frontiers in Energy 2022, Volume 16, Issue 4,   Pages 651-660 doi: 10.1007/s11708-020-0699-7

Abstract: In this paper, a novel cooling control strategy as part of the smart energy system that can balance thermalFor this goal, a general form of a building was coupled by the smart cooling system (SCS) and the consumptionof energy with thermal comfort cooling of persons simulated by using the EnergyPlus software and comparedthermal comfort temperature was used in accordance with the BMI of persons, it can save up to 35% of the cooling

Keywords： smart home     heating and cooling systems     saving energy     optimal consumption of energy    

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A state-of-the-art review of solar passive building system for heating or cooling purpose

Arun Kumar NANDA,C K PANIGRAHI

Frontiers in Energy 2016, Volume 10, Issue 3,   Pages 347-354 doi: 10.1007/s11708-016-0403-0

Abstract: The major portion of energy in a building is consumed by heating, ventilating, and air-conditioning (The traditional heating and cooling systems contribute greatly to the emission of greenhouse gases, especiallySimilarly, two major ways, i.e., evaporative cooling and building integrated evaporative cooling areadopted for cooling of the building.Therefore, an attempt has been made in this paper to compile the developments of solar heating and cooling

Keywords： HVAC     heating     cooling     solar heating     carbon dioxide (CO2) emissions    

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A concept of capillary active, dynamic insulation integrated with heating, cooling and ventilation, air

Mark BOMBERG

Frontiers of Structural and Civil Engineering 2010, Volume 4, Issue 4,   Pages 431-437 doi: 10.1007/s11709-010-0071-9

Abstract: fire considerations limit exterior thermal insulation, one needs to use interior thermal insulation systemsInterior thermal insulation systems are less effective than the exterior systems and will not reduceThis happens when such insulation is integrated with heating, cooling and ventilation, air conditioning

Keywords： capillary active insulation     integrated heating     cooling and ventilation     air conditioning (HVAC) and building    

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A comprehensive energy solution for households employing a micro combined cooling, heating and power

Huayi ZHANG, Can ZHANG, Fushuan WEN, Yan XU

Frontiers in Energy 2018, Volume 12, Issue 4,   Pages 582-590 doi: 10.1007/s11708-018-0592-9

Abstract:

In recent years, micro combined cooling, heating and power generation (mCCHP) systems have attractedThe input energy of a mCCHP system is natural gas, while the outputs include heating, cooling and electricity

Keywords： energy hub     micro combined cooling     heating and power generation (mCCHP)     thermal comfort     robust optimization    

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Active-reactive power scheduling of integrated electricity-gas network with multi-microgrids

Frontiers in Energy 2023, Volume 17, Issue 2,   Pages 251-265 doi: 10.1007/s11708-022-0857-1

Abstract: Advances in natural gas-fired technologies have deepened the coupling between electricity and gas networks, promoting the development of the integrated electricity-gas network (IEGN) and strengthening the interaction between the active-reactive power flow in the power distribution network (PDN) and the natural gas flow in the gas distribution network (GDN). This paper proposes a day-ahead active-reactive power scheduling model for the IEGN with multi-microgrids (MMGs) to minimize the total operating cost. Through the tight coupling relationship between the subsystems of the IEGN, the potentialities of the IEGN with MMGs toward multi-energy cooperative interaction is optimized. Important component models are elaborated in the PDN, GDN, and coupled MMGs. Besides, motivated by the non-negligible impact of the reactive power, optimal inverter dispatch (OID) is considered to optimize the active and reactive power capabilities of the inverters of distributed generators. Further, a second-order cone (SOC) relaxation technology is utilized to transform the proposed active-reactive power scheduling model into a convex optimization problem that the commercial solver can directly solve. A test system consisting of an IEEE-33 test system and a 7-node natural gas network is adopted to verify the effectiveness of the proposed scheduling method. The results show that the proposed scheduling method can effectively reduce the power losses of the PDN in the IEGN by 9.86%, increase the flexibility of the joint operation of the subsystems of the IEGN, reduce the total operation costs by $32.20, and effectively enhance the operation economy of the IEGN.

Keywords： combined cooling     heating     and power (CCHP)     integrated energy systems (IES)     natural gas     power distribution    

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Efficient use of waste heat and solar energy: Technologies of cooling, heating, power generation and

Ya-Ling HE, Ruzhu WANG, Anthony Paul ROSKILLY, Peiwen LI

Frontiers in Energy 2017, Volume 11, Issue 4,   Pages 411-413 doi: 10.1007/s11708-017-0525-z

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Numerical investigation of the effectiveness of effusion cooling for plane multi-layer systems with different

Dieter BOHN, Robert KREWINKEL

Frontiers in Energy 2009, Volume 3, Issue 4,   Pages 406-413 doi: 10.1007/s11708-009-0041-x

Abstract: Collaborative Research Center (SFB) 561 “Thermally Highly Loaded, Porous and Cooled Multi-Layer SystemsWithin the SFB, two different multi-layer systems, one consisting of substrate made of CMSX-4 (a single-crystalThe effusion-cooling is realized by finest drilled shaped holes with a diameter of 0.2mm.The investigation is concentrated on a cooling hole geometry with a laterally widened fan-shaped outlet

Keywords： conjugate calculation     effectiveness of effusion cooling     multi-layer systems     CMSX-4     NiAl-FG75    

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evaluation of an improved biomass-fired cogeneration system simultaneously using extraction steam, coolingwater, and feedwater for heating

Frontiers in Energy 2022, Volume 16, Issue 2,   Pages 321-335 doi: 10.1007/s11708-021-0741-4

Abstract: of the traditional single heat source (extraction steam), the extraction steam from the turbine, the cooling

Keywords： biomass-fired cogeneration     district heat production system     absorption heat pump     extraction steam     cooling    

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Water, Air Emissions, and Cost Impacts of Air-Cooled Microturbines for Combined Cooling, Heating, andPower Systems: A Case Study in the Atlanta Region Article

Jean-Ann James, Valerie M. Thomas, Arka Pandit, Duo Li, John C. Crittenden

Engineering 2016, Volume 2, Issue 4,   Pages 470-480 doi: 10.1016/J.ENG.2016.04.008

Abstract: Combined cooling, heating, and power (CCHP) systems have the potential to improve the energy generationefficiency of a city or urban region by providing energy for heating, cooling, and electricity simultaneouslythe Atlanta metropolitan region, under various operational scenarios following the building thermal (heatingand cooling) demands.CCHP systems are more economical for medium office, large office, and multifamily residential buildings

Keywords： Combined cooling heating and power (CCHP)     Air-cooled microturbines     Distributed energy generation     Water    

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An invariant descriptor for conjugate forced convection-conduction cooling of 3D protruding heaters in

Thiago ANTONINI ALVES,Paulo H. D. SANTOS,Murilo A. BARBUR

Frontiers of Mechanical Engineering 2015, Volume 10, Issue 3,   Pages 263-276 doi: 10.1007/s11465-015-0345-y

Abstract: coefficients (g+) caused by the forced convection-conduction nature of the heaters’ coolingeach heater in the channel is quantified to clearly identify the contributions attributed to the self-heating

Keywords： channel flow     conjugate forced convection-conduction cooling     conjugate influence coefficients     discreteheating     invariant descriptor     thermal management    

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A small-scale silica gel-water adsorption system for domestic air conditioning and water heating by the

Y. YU, Q. W. PAN, L. W. WANG

Frontiers in Energy 2020, Volume 14, Issue 2,   Pages 328-336 doi: 10.1007/s11708-019-0623-1

Abstract: adsorber, which utilizes solar energy to achieve the cogeneration of domestic air conditioning and water heatingand heating performance.Then, the cogeneration performance of domestic cooling and water heating effect is studied at differentWhen the inlet temperature of hot water is around 85°C, the largest cooling power and heating power areUnder the condition of cooling water temperature of 35°C, the obtained maximum COP , COP , and SCP of

Keywords： silica gel-water     heat and mass recovery     solar energy     domestic cooling and heating    

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A thermoelectric generator and water-cooling assisted high conversion efficiency polycrystalline silicon

Zekun LIU, Shuang YUAN, Yi YUAN, Guojian LI, Qiang WANG

Frontiers in Energy 2021, Volume 15, Issue 2,   Pages 358-366 doi: 10.1007/s11708-020-0712-1

Abstract: Solar energy has been increasing its share in the global energy structure. However, the thermal radiation brought by sunlight will attenuate the efficiency of solar cells. To reduce the temperature of the photovoltaic (PV) cell and improve the utilization efficiency of solar energy, a hybrid system composed of the PV cell, a thermoelectric generator (TEG), and a water-cooled plate (WCP) was manufactured. The WCP cannot only cool the PV cell, but also effectively generate additional electric energy with the TEG using the waste heat of the PV cell. The changes in the efficiency and power density of the hybrid system were obtained by real time monitoring. The thermal and electrical tests were performed at different irradiations and the same experiment temperature of 22°C. At a light intensity of 1000 W/m , the steady-state temperature of the PV cell decreases from 86.8°C to 54.1°C, and the overall efficiency increases from 15.6% to 21.1%. At a light intensity of 800 W/m , the steady-state temperature of the PV cell decreases from 70°C to 45.8°C, and the overall efficiency increases from 9.28% to 12.59%. At a light intensity of 400 W/m , the steady-state temperature of the PV cell decreases from 38.5°C to 31.5°C, and the overall efficiency is approximately 3.8%, basically remain unchanged.

Keywords： photovoltaic (PV)     thermoelectric generator     conversion efficiency     hybrid energy systems     water-cooled plate    

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A district heating system based on absorption heat exchange with CHP systems

Lin FU, Yan LI, Yi JIANG, Shigang ZHANG,

Frontiers in Energy 2010, Volume 4, Issue 1,   Pages 77-83 doi: 10.1007/s11708-010-0022-0

Abstract: In order to decrease the energy consumption of large-scale district heating systems with cogeneration, a district heating system is presented in this paper based on absorption heat exchange in the cogenerationIn substations of the heating system, the temperature of return water of primary heat network is reducedCompared with traditional heating systems, this system runs with a greater circuit temperature drop soMoreover, by recovering the exhausted heat from the condensers, the capacity of the district heating

Keywords： cogeneration     district heating     absorption heat exchange     Co-ah cycle    

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Numerical simulation of billet heating

Chen Guanjun

Strategic Study of CAE 2010, Volume 12, Issue 2,   Pages 57-61

Abstract:

According to the case of billet heating in a regenerative type heatingThe relation of different thick billet and the heating time is simulated and studied, the result of simulationand the heating time in the actual heating furnace is compared, and the expressions of thickness andheating time is educed by numerical suit, and put into production.The above result of study can offer foundation for the establishment and optimizing of billet heating

Keywords： heating furnace     billet     heating     simulation    

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Title Author Date Type Operation

Energy efficiency of small buildings with smart cooling system in the summer

Yazdan DANESHVAR, Majid SABZEHPARVAR, Seyed Amir Hossein HASHEMI

Journal Article

A state-of-the-art review of solar passive building system for heating or cooling purpose

Arun Kumar NANDA,C K PANIGRAHI

Journal Article

A concept of capillary active, dynamic insulation integrated with heating, cooling and ventilation, air

Mark BOMBERG

Journal Article

A comprehensive energy solution for households employing a micro combined cooling, heating and power

Huayi ZHANG, Can ZHANG, Fushuan WEN, Yan XU

Journal Article

Active-reactive power scheduling of integrated electricity-gas network with multi-microgrids

Journal Article

Efficient use of waste heat and solar energy: Technologies of cooling, heating, power generation and

Ya-Ling HE, Ruzhu WANG, Anthony Paul ROSKILLY, Peiwen LI

Journal Article

Numerical investigation of the effectiveness of effusion cooling for plane multi-layer systems with different

Dieter BOHN, Robert KREWINKEL

Journal Article

evaluation of an improved biomass-fired cogeneration system simultaneously using extraction steam, coolingwater, and feedwater for heating

Journal Article

Water, Air Emissions, and Cost Impacts of Air-Cooled Microturbines for Combined Cooling, Heating, andPower Systems: A Case Study in the Atlanta Region

Jean-Ann James, Valerie M. Thomas, Arka Pandit, Duo Li, John C. Crittenden

Journal Article

An invariant descriptor for conjugate forced convection-conduction cooling of 3D protruding heaters in

Thiago ANTONINI ALVES,Paulo H. D. SANTOS,Murilo A. BARBUR

Journal Article

A small-scale silica gel-water adsorption system for domestic air conditioning and water heating by the

Y. YU, Q. W. PAN, L. W. WANG

Journal Article

Why the weight of some metal materials is lighter after heating up, and heavier after cooling down

null

Journal Article

A thermoelectric generator and water-cooling assisted high conversion efficiency polycrystalline silicon

Zekun LIU, Shuang YUAN, Yi YUAN, Guojian LI, Qiang WANG

Journal Article

A district heating system based on absorption heat exchange with CHP systems

Lin FU, Yan LI, Yi JIANG, Shigang ZHANG,

Journal Article

Numerical simulation of billet heating

Chen Guanjun

Journal Article